Cardinal Health will lay off about 170 employees, including 70 from its Dublin headquarters. The jobs are primarily in the company’s pharmaceutical segment and in corporate support, said Cardinal spokeswoman Debbie Mitchell. Employees were notified on Monday and given 30 days’ notice. They will receive a severance package based on years of employment and “will be given preference for any available positions that might be open,” Mitchell said. “Job eliminations are extremely difficult, and they represent valued teammates.”